• 생약학회지
• /
• 제35권2호통권137호
• /
• pp.175-178
• /
• 2004

The cricket has been used in East Asia as crude drugs for treating fever and hypertension, and is presently reared as a pharmaceutical insect in China and a food for animals. For the purpose of evaluating protective extracts against alcohol-induced toxicity, the extracts of the cricket (Gryllus bimaculatus) were examined in animal models acutely administered alcohol by the cricket in ICR-mice. Water and methanol extracts from the cricket, were found to cause a significant decrease (37%) in the blood ethanol concentration as well as enhancement of liver mitochondrial alcohol dehydogenase (ADH) and acetaldehyde dehydogenase (ALDH) activitieson on a single intraperitoneal administration in mice. Futhermore methanol extract was demonstrated to exhibit more potent enhancing activity on ethanol metabolism than water extract. These results suggest that water/alcohol extract of G. bimaculatus may be used as a food for reducing the toxicity of alcohol.

• International Journal of Industrial Entomology and Biomaterials
• /
• 제5권1호
• /
• pp.73-77
• /
• 2002

The Sec61 trimeric complex ($\alpha$,$\beta$, and ${\gamma}$ subunits) is one of the Sec-complex responsible for post-translational protein translocation across the endoplasmic reticulum membrane in diverse organisms. In this study, a cDNA encoding the Sec61p ${\gamma}$ subunit homologue was isolated from the cDNA library of the mole cricket, Gryllotalpa orientalis. Sequence analysis of a 442-bp cDNA clone showed it to contain an open reading frame of 68 amino acid residues consisted of 204-bp. The homologues of the gene were found in the GenBank database in a diverse organism including insect, mammals, fungi, and plants. The deduced amino acid sequence of Sec61p ${\gamma}$ subunit homologue of the mole cricket showed the highest homology to the gene of the singly known insect, Drosophila melanogester (93% identity), and the least homology to that of the baker's yeast, Saccharomyces cerevisiae (37.2%). Phylogenetic analysis also confirmed a close relationship between the insect Sec61p ${\gamma}$ subunit homologues of G. orientalis and D. melanogester. Hydropathy analysis of the cricket mole and published other data suggested that the hydrophobic segment close to C-terminus is predicted to be the putative membrane anchor, Multiple alignment of the Sec61p ${\gamma}$ subunit homologue among several organisms showed the presence of several conserved domains including the conserved proline at position 28.

• 한국식품저장유통학회지
• /
• 제23권2호
• /
• pp.211-217
• /
• 2016

식용 귀뚜라미를 고압증기멸균한 뒤 동결건조하였으며, 이를 분쇄하여 AL/PET/LLDPE film에 포장 후 25, 35 및 $40^{\circ}C$에서 6개월 동안 저장하며 한 달 간격으로 품질변화를 측정하였다. 수분함량은 저장기간 중 모든 구에서 증가하였으나, 저장 6개월 차에 저장온도별 유의적 차이는 없었다. 산가의 초기값은 1.83 mg KOH/g 이였으며, 저장 6개월 차에 25, 35 및 $40^{\circ}C$ 저장구는 1.93, 2.04 및 2.15 mg KOH/g으로 증가하였다. 지방산은 palmitic acid, oleic acid 및 linoleic acid가 24.79, 28.58 및 28.55 g/100 g으로 높은 함량을 나타내었으며, palmitic acid 및 linoleic acid는 저장온도 별 증 감소의 경향이 뚜렷하지 않았으나, oleic acid는 저장기간 중 감소하는 경향을 나타내었다. 일반세균 및 대장균군은 저장기간 동안 검출되지 않았다. 관능검사의 경우 25 및 $35^{\circ}C$ 저장구는 유의적 차이가 없으나, $40^{\circ}C$ 저장구는 유의적 차이를 나타내었다(p<0.05). 저장기간 중 품질에 영향을 미치는 인자는 수분함량, 산가, oleic acid 및 flavor로 판단되었으며, 이들의 한계 기준을 각각 5%, 3 mg KOH/g, 26.5 g/100 g 및 6으로 설정하여 유통온도 $25^{\circ}C$를 기준으로 VSLSF 프로그램으로 유통기한을 산출하였다. 수분함량, 산가, oleic acid 및 flavor의 유통기한을 산출한 결과 23, 61, 150 및 155개월이었으며, 유통기한이 가장 짧은 항목에 안전계수 0.8을 적용하여 18개월로 설정하였다. 이상의 결과는 제조 후 $25^{\circ}C$ 유통조건에서 18개월까지는 귀뚜라미 분말의 품질 안정성이 유지되는 것으로 판단되었다.

• Animal Systematics, Evolution and Diversity
• /
• 제28권2호
• /
• pp.140-144
• /
• 2012

The field-cricket $Turanogryllus$ $eous$ Bey-Bienko, 1956 and its genus $Turanogryllus$ Tarbinsky, 1940 were recorded for the first time from Chungcheongbuk-do province in Korea to carry out the project 'The sound guides to Korean animals.' Depending on the discovery of the cricket, its distributional ranges are more widened towards East Asia to the Korean peninsula from China mainland, the $Turanogryllus$ was 10th to known Gryllinae genera in Korea. Description, photos of habitus, figure of male genitalia, oscillogram and spectrogram for the calling sound are provided for aid identification. Voucher specimens are deposited in the collection of National Institute of Biological Resources, Incheon, Korea.

• 한국가금학회지
• /
• 제27권3호
• /
• pp.197-202
• /
• 2000

Chemical characteristics of the cricket, Gryllus bimaculatus, were investigated in total composition, amino acid composition, fatty acid composition and mineral components. After the treatment of 0.4% of G. bimaculatus in the chicken feed, the changes of fatty acid composition in the chicken meat and egg were also estimated. As the result, saturated fatty acid, especially palmitic acid, decreased 4% and unsaturated fatty acids, linoleic aced and arachidonic acid, increased 12 and 23%, respectively, compared with those of control. In addition, there was a small increase in Eicosapentaenoic acid(EPA). The sensory test of the chicken meat resulted in increased flavor, brightness and yellow color. The sensory scores of G. bimaculatus egg in the point of taste resulted in somewhat better estimate than control. These results are appear to be stemmed from fatty acids of cricket.

• 제어로봇시스템학회논문지
• /
• 제14권9호
• /
• pp.925-930
• /
• 2008

Many sensor network applications require that each node's sensor data stream be annotated with its physical location in some coordinate system. Equipping GPS on every sensor node is often expensive and does not work in indoor deployments. Recently, cricket-based localization system is often used for indoor localization system. It is very important to know the exact position of beacons in cricket-based localization system for identifying moving sensor node's position. In this paper, a new method, Mobile Listener Detect Algorithm (MLD) which can automatically calculate the unknown newly installed beacons is proposed. For the verification of the feasibility of the proposed scheme, we have conducted several experiments.

• 한국정보처리학회:학술대회논문집
• /
• 한국정보처리학회 2009년도 춘계학술발표대회
• /
• pp.901-904
• /
• 2009

센서 네트워크의 발달과 보급으로 유비쿼터스 센서 네트워크(USN: Ubiquitous Sensor Network)를 이용해 실생활에서 다양하게 활용되고 있다. 이런 방법 중 하나로 본 논 문에서는 크리켓 센서를 통하여 사용자가 직접 컴퓨터와 상호작용 할 수 있는 새로운 시스템을 개발하였고 그 결과를 기술하였다. 이 시스템 구축 과정을 통해 증강현실이 요구하는 인간 친화적이고 직관적인 인터페이스를 제시하였다.

• International Journal of Industrial Entomology and Biomaterials
• /
• 제6권1호
• /
• pp.87-92
• /
• 2003

We describe here the cloning, expression and characterization of a cDNA encoding a putative chemosensory protein (CSP) from the mole cricket, Gryllotalpa orientalis. The G. orientalis chemosensory protein cDNA sequences comprised of 384 bp with 128 amino acid residues. The G. orientalis chemosensory protein showed 75.4% protein sequence identity to the Locusta migratoria CSP, Northern blot analysis revealed that signal was stronger in head than leg and cuticle, indicating that the head part containing antennae is a main site for G. orientalis chemosensory protein synthesis. The cDNA encoding G. orientalis chemosensory protein was expressed as approximately 12 kDa polypeptide in baculovirus-infected insect cells.

• International Journal of Industrial Entomology and Biomaterials
• /
• 제6권2호
• /
• pp.157-162
• /
• 2003

The glutathione S-transferase (GSTs) are enzymes responsible for the protection of cells from chemical toxicants and oxidative stress. We describe here the cDNA sequence and mRNA expression of a putative GST from the mole cricket, Gryllotalpa orientalis. The G. orientalis GST cDNA sequences comprised of 621 bp encoding 207 amino acid residues. The multiple sequence alignment of G. orientalis GST gene with other known insect GSTs showed several conserved residues that may be essential for the enzymatic activity of the protein. Phylogenetic analysis of the deduced amino acid sequences of G. orientalis GST gene with other insect GST sequences revealed that the G. orientalis GST gene belongs to class I GST, forming a strong monophyletic group (100% bootstrap value) exclusively for class I GSTs from a diverse insect species. Northern blot analysis confirmed midgut-specific expression at transcriptional level, evidencing the midgut as a site for GST synthesis.

• 제어로봇시스템학회논문지
• /
• 제13권7호
• /
• pp.711-717
• /
• 2007

Location information will become increasingly important for future Pervasive Computing applications. Location tracking system of a moving device can be classified into two types of architectures: an active mobile architecture and a passive mobile architecture. In the former, a mobile device actively transmits signals for estimating distances to listeners. In the latter, a mobile device listens signals from beacons passively. Although the passive architecture such as Cricket location system is inexpensive, easy to set up, and safe, it is less precise than the active one. In this paper, we present a passive location system using Cricket Mote sensors which use RF and ultrasonic signals to estimate distances. In order to improve accuracy of the passive system, the transmission speed of ultrasound was compensated according to air temperature at the moment. Upper and lower bounds of a distance estimation were set up through measuring minimum and maximum distances that ultrasonic signal can reach to. Distance estimations beyond the upper and the lower bounds were filtered off as errors in our scheme. With collecting distance estimation data at various locations and comparing each distance estimation with real distance respectively, we proposed an equation to compensate the deviation at each point. Equations for proposed algorithm were derived to calculate relative coordinates of a moving device. At indoor and outdoor tests, average location error and average location tracking period were 3.5 cm and 0.5 second, respectively, which outperformed Cricket location system of MIT.